spi/dw_spi: don't treat NULL clk as an error
clk_get() returns a struct clk cookie to the driver and some platforms
may return NULL if they only support a single clock. clk_get() has only
failed if it returns a ERR_PTR() encoded pointer.
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
diff --git a/drivers/spi/dw_spi_mmio.c b/drivers/spi/dw_spi_mmio.c
index db35bd9..2fa012c1 100644
--- a/drivers/spi/dw_spi_mmio.c
+++ b/drivers/spi/dw_spi_mmio.c
@@ -9,6 +9,7 @@
*/
#include <linux/clk.h>
+#include <linux/err.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
@@ -68,8 +69,8 @@
}
dwsmmio->clk = clk_get(&pdev->dev, NULL);
- if (!dwsmmio->clk) {
- ret = -ENODEV;
+ if (IS_ERR(dwsmmio->clk)) {
+ ret = PTR_ERR(dwsmmio->clk);
goto err_irq;
}
clk_enable(dwsmmio->clk);